Wristwatch



FIG. 1 is a front right perspective view of a wristwatch showing our new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a rear view thereof;

FIG. 8 is a rear right perspective view thereof;

FIG. 9 is a front left perspective view thereof; and,

FIG. 10 is a rear left perspective view thereof.

The portions of the wristwatch shown in broken lines form no part of the claimed design. 

The ornamental design for a wristwatch, as shown and described. 